Katherine Jackson filed court papers asking for her grandson TJ to be paid $9,000 per month from the Michael Jackson Estate to look after the late pop star's three children.

Katherine and TJ serve as the guardians of Prince Michael, 16, Paris, 15, and Blanket, 11, and according to the documents, Katherine claims TJ initially rejected the figure, instead settling for a salary comparable to what the kids' nanny makes.

Katherine noted in the papers that TJ spends around 300 hours per week with the kids, taking them to appointments and activities including karate and guitar lessons, helping them with homework and attending school functions.

TJ was appointed as co-guardian earlier this year after the family grew concerned about 82-year-old Katherine's stability. A judge has yet to rule on the case.